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Author Spotlight: Automated Bioprinting for High-Throughput Vascular Model Fabrication
Published on: August 16, 2024
An Aligned Patterned Biomimetic Elastic Membrane Has a Potential as Vascular Tissue Engineering Material
Juanjuan Tan1,2, Jing Bai1, Zhiqiang Yan3
1School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composite Materials and Shanghai Key Lab of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, Shanghai, China.
This study developed a novel biomimetic elastic membrane using anthracene-grafted poly(styrene-block-butadiene-block-styrene) (SBS-An) for vascular tissue engineering. An optimal surface pattern height of 4 μm significantly enhanced endothelial cell adhesion and proliferation, showing potential for small-diameter vascular grafts.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Nanotechnology
Background:
- Cardiovascular disease is a leading cause of death globally.
- Synthetic vascular grafts show poor patency rates in small-diameter vessels.
- Nanoparticles offer potential for improving engineered tissues due to their unique properties.
Purpose of the Study:
- To synthesize and characterize a novel biomimetic elastic membrane with tunable surface patterns for vascular tissue engineering.
- To investigate the effect of surface pattern height on human umbilical vein endothelial cell (HUVEC) adhesion and proliferation.
- To explore the potential of this material in addressing the limitations of current synthetic vascular grafts.
Main Methods:
- Synthesis of anthracene-grafted poly(styrene-block-butadiene-block-styrene) (SBS-An).
- Fabrication of a switchable Janus structure biomimetic elastic membrane using UV light irradiation to create surface patterns.
- Culturing of HUVECs on SBS-An films with varying pattern heights (0-120 s irradiation times) to assess cell adhesion and proliferation.
Main Results:
- Six well-ordered surface-patterned SBS-An films were successfully fabricated.
- The sample with a 4 μm height (30 s irradiation) significantly promoted HUVEC adhesion and proliferation compared to other heights.
- The optimal sample demonstrated enhanced expression of proliferation- and angiogenesis-related genes.
Conclusions:
- Surface pattern height is a critical factor in controlling endothelial cell behavior on biomimetic elastic membranes.
- SBS-An with an appropriate surface pattern height shows significant potential for vascular tissue engineering applications, particularly for small-diameter vessels.
- This approach offers a promising strategy to improve the performance of synthetic vascular grafts.
